/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Nathan Letwory.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/collada/ErrorHandler.cpp
 *  \ingroup collada
 */
#include "ErrorHandler.h"
#include <iostream>

#include "COLLADASaxFWLIError.h"
#include "COLLADASaxFWLSaxParserError.h"
#include "COLLADASaxFWLSaxFWLError.h"

#include "GeneratedSaxParserParserError.h"

#include <string.h>

#include "BLI_utildefines.h"

//--------------------------------------------------------------------
ErrorHandler::ErrorHandler() : mError(false)
{
}

//--------------------------------------------------------------------
ErrorHandler::~ErrorHandler()
{
}

//--------------------------------------------------------------------
bool ErrorHandler::handleError(const COLLADASaxFWL::IError *error)
{
	/* This method must return false when Collada should continue.
	 * See https://github.com/KhronosGroup/OpenCOLLADA/issues/442
	 */
	bool isError = true;
	std::string error_context;
	std::string error_message;

	if (error->getErrorClass() == COLLADASaxFWL::IError::ERROR_SAXPARSER) {
		error_context = "Schema validation";

		COLLADASaxFWL::SaxParserError *saxParserError = (COLLADASaxFWL::SaxParserError *) error;
		const GeneratedSaxParser::ParserError& parserError = saxParserError->getError();
		error_message = parserError.getErrorMessage();

		if (parserError.getErrorType() == GeneratedSaxParser::ParserError::ERROR_VALIDATION_MIN_OCCURS_UNMATCHED) {
			if (STREQ(parserError.getElement(), "effect")) {
				isError = false;
			}
		}

		else if (parserError.getErrorType() == GeneratedSaxParser::ParserError::ERROR_VALIDATION_SEQUENCE_PREVIOUS_SIBLING_NOT_PRESENT) {
			if (!(STREQ(parserError.getElement(), "extra") &&
			      STREQ(parserError.getAdditionalText().c_str(), "sibling: fx_profile_abstract")))
			{
				isError = false;
			}
		}

		else if (parserError.getErrorType() == GeneratedSaxParser::ParserError::ERROR_COULD_NOT_OPEN_FILE) {
			isError = true;
			error_context = "File access";
		}

		else isError = (parserError.getSeverity() != GeneratedSaxParser::ParserError::Severity::SEVERITY_ERROR_NONCRITICAL);

	}
	else if (error->getErrorClass() == COLLADASaxFWL::IError::ERROR_SAXFWL) {
		error_context = "Sax FWL";
		COLLADASaxFWL::SaxFWLError *saxFWLError = (COLLADASaxFWL::SaxFWLError *) error;
		error_message = saxFWLError->getErrorMessage();

		/*
		 * Accept non critical errors as warnings (i.e. texture not found)
		 * This makes the importer more graceful, so it now imports what makes sense.
		 */

		isError = (saxFWLError->getSeverity() != COLLADASaxFWL::IError::SEVERITY_ERROR_NONCRITICAL);

	}
	else {
		error_context = "OpenCollada";
		error_message = error->getFullErrorMessage();
		isError = true;
	}

	std::string severity = (isError) ? "Error" : "Warning";
	std::cout << error_context << " (" << severity << "): " << error_message << std::endl;
	if (isError) {
		std::cout << "The Collada import has been forced to stop." << std::endl;
		std::cout << "Please fix the reported error and then try again.";
		mError = true;
	}
	return isError;
}
